Finding the Third Proportional to 30,431.25 and 65,994.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,431.25 : 65,994.75 = 65,994.75 : x
2. Step 2: Convert to fraction form
   30,431.25/65,994.75 = 65,994.75/x
3. Step 3: Cross multiply
   30,431.25x = 65,994.75 × 65,994.75
4. Step 4: Simplify right side
   30,431.25x = 4,355,307,027.56
5. Step 5: Solve for x
   x = 4,355,307,027.56/30,431.25
6. Step 6: Final answer
   x = 143,119.56